Means for fastening floor and sidewalk gratings.



N. BERSGN. MEANS ron ms'rmlma ILoon Ann sumwALx Gammes. APILIOATIGH EILED DBO. 12, 1918.

1,105,873, Patented Aug. 4, 1914,

UNTTED sTaTas rATEN clarion.N

NATHAN BEnsoN, or NEW YORK, N. Y., AssIerNoa, BY MEsNn ASSIGNMENTS, To IRVING ntoN wenns COMPANY, A CORPORATION or NEw'YoRK.

MEANS FOR FASTENING FLOOR AND SIDEWALK GRATIN'G'S.

`Specification of Letters Patent.

Application med December 12,1913.` Serial No. 806,342.

Patented Aug, 4, 19111.

vments in Means for Fastening Floor and sibility of its Sidewalk Gratings, of ywhich the following is a specification. j

My invention relates to gratings such as are shown, for instance, in U. S'. Letters Patent to Gustav A. Keller, No. 1,045,795, dated Nov. 26,1912. Gratings of this and similar types, to which my invention is also applicable, usually have a plurality of parallel projecting bars at each end which, when the grating is in position in the floor'or side" walk, rest on the horizontal flanges of angleirons forming the'ends of rectangular metal frames 'in which each panel of the grating,

is set. These metal frames are usually set in cement inthe openings in sidewalks or oors, which openings the grating is designed to protect.

The problem of providing a simple and efficient fastening for holding the gratings in their supporting frames of angle-iron or equivalent construction, which can be conveniently operated both in attaching and detaching, has presented some difliculty. Such fastening must be placed below the upper surface of the grating so as not to present any projections against which the feet of pedestrians may strike, and when so located it soon becomes buried in accumulated dirt, rust or ice which, added to the inaccesosition, makes it diiiicult to detach when t egrating is to be taken up, as well as diflicult to install in the first place. I havey invented a simple form of attach# ment for such gratings which overcomes these diliculties, and the best form of apparatus at present known to me, embodying the principle of my invention, is illustrated in the accompanying sheet of drawings, in

. on line 2 2 of Fig. 1, and Fig. 3' is a vertical cross section on line of Fig. 1.

Throughout the drawmgs like reference characters indicate like parts.

lis one of the bent strips forming the vsides of a panel of the grating described in the above mentioned patentto Keller, and 2 1s one of the' angle-iron end pieces to which the side strip l is. riveted. Within this rectangular frame, and resting on the flanges of the angle-irons 2, 2, is the grating proper lare alternated with strips 3, 3, and serve as spacing members for the same. The straight bars are arranged parallel to the side strips 1, 1, and the reticulated strips zig-zag back and forth between the straight bars or strips. The two are fastened together at every point of contact, preferablyby rivets 5, 5. The straight bars and reticulated strips are so located that their upper edges are all in the same plane, as shown in Figs. 2 and 3, which plane coincides with vthe upper surface of the grating. j

The bars 3 and strips 4 form parallel projections at each end of the grating, and in the holes provided for rivets in two of such adjacent projections (not used in this case) are inserted theprojecting pivot ears 10, 10, of a swinging U-shaped structure 8, which is adapted to swing under the bolt 6 or other projecting member which extends substantially parallel to the horizontal flange of the angle-iron 2, and which bolt 6 is preferably mounted in the vertical flange of said angleiron by insertion through a hole 11, in said flange and` clamping thereto by lock nut 7. In operation the hole 11 is made larger than bolt 6, as shown, so that the bolt may be pointed slightly upward if necessary to facilitate swinging the Ushaped structure 8 under it. The lock nut 7 can then be easily screwed up with a spannerthereby fastening the bolt rigidly in a horizontal position with its serrated under surface bearing down on the swingingmember 8. This prevents the swingingmember 8 from being easily disen gaged from the bolt and firmly fastens the grating in the frame. As many of these fastenings as' desired may be used 'for each panel, and located at convenient points.

One at each end is usually enough, however. When it is desired to take up the grating the fastening can be promptly detached by inserting a screw driver `or other bar between I member 8 and angle-iron 2 and prying thel lower end `-of 8 free from the bolt 6 by swingi it outwardly. i j l ile angle iron supports are here shown and described, other equivalent constructions affording supportinl and confining means for the grating mig t be substituted.

Having, therefore, described my invention, I claim: l

1. The combination with a grating having a plurality of substantially parallel projecting bars at each end, and a frame for holding and adapted to engage the roughened under surface of the projecting member.

2. The combination with a grating having a plurality of substantially parallel projecting bars at each end and a frame for holding for the gratingthe' `said grating having end supporting pieces for the grating, of a projecting memj ber loosely mountedn a hole in the frame,

a swinging member pivoted in the .projecting-ends of the gratingand adapted to engage the under surface of the projecting member, and means for fastening said projecting member rigidly in the-opening in which it is loosely mounted, so that it will extend parallel to the bar s of theA grating.

I 3. The combination with a grating having a plurality of substantially parallel projecting bars at each end and an angle-iron frame for holding said grating, of` a bolt set in a perforation in the vertical flange of the angle-iron and extending substantially parallel to the bars of the grating, and a swinging member pivoted in the'projecting ends of the grating and 'adapted to engage the under surface of the projecting portion of the bolt.

NATHAN BER-SON. j Witnesses:

JAS. H. GRIFFIN, CORNELIUS ZABnIsKiE. 

